52 lines
1.2 KiB
C
52 lines
1.2 KiB
C
/* $Id: cache.h,v 1.6 2004/03/11 18:08:05 lethal Exp $
|
|
*
|
|
* include/asm-sh/cache.h
|
|
*
|
|
* Copyright 1999 (C) Niibe Yutaka
|
|
* Copyright 2002, 2003 (C) Paul Mundt
|
|
*/
|
|
#ifndef __ASM_SH_CACHE_H
|
|
#define __ASM_SH_CACHE_H
|
|
#ifdef __KERNEL__
|
|
|
|
#include <linux/init.h>
|
|
#include <asm/cpu/cache.h>
|
|
|
|
#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT)
|
|
|
|
#define __read_mostly __attribute__((__section__(".data.read_mostly")))
|
|
|
|
#ifndef __ASSEMBLY__
|
|
struct cache_info {
|
|
unsigned int ways; /* Number of cache ways */
|
|
unsigned int sets; /* Number of cache sets */
|
|
unsigned int linesz; /* Cache line size (bytes) */
|
|
|
|
unsigned int way_size; /* sets * line size */
|
|
|
|
/*
|
|
* way_incr is the address offset for accessing the next way
|
|
* in memory mapped cache array ops.
|
|
*/
|
|
unsigned int way_incr;
|
|
unsigned int entry_shift;
|
|
unsigned int entry_mask;
|
|
|
|
/*
|
|
* Compute a mask which selects the address bits which overlap between
|
|
* 1. those used to select the cache set during indexing
|
|
* 2. those in the physical page number.
|
|
*/
|
|
unsigned int alias_mask;
|
|
|
|
unsigned int n_aliases; /* Number of aliases */
|
|
|
|
unsigned long flags;
|
|
};
|
|
|
|
int __init detect_cpu_and_cache_system(void);
|
|
|
|
#endif /* __ASSEMBLY__ */
|
|
#endif /* __KERNEL__ */
|
|
#endif /* __ASM_SH_CACHE_H */
|